Voskobulova N.I., Vereshchagina A.S., Uraskulov R.Sh.

The structure of pea grain yield depending on seeding rate in the steppe zone of Orenburg Cis-Urals

DOI: 10.33284/2658-3135-102-1-164

UDC 633.358:631.559:631.53.048(470.56)

 The structure of pea grain yield depending on seeding rate in the steppe zone

of Orenburg Cis-Urals

N.I. Voskobulova, A.S. Vereshchagina, R.Sh.Uraskulov

FSBSI «Federal Research Center for Biological Systems and Agrotechnologies of the Russian Academy of Sciences»

Summary. Analysis of structure of pea yield allows us to establish the dependence of its formation on environmental factors. It is especially important in the arid conditions of the steppe zone of Orenburg region.

The article presents the results of studies on the influence of seeding rate on structure of pea grain yield.

The object of research is pea varieties of different morphotypes of Samara Research Institure of Agriculture: Samarius variety – leafless indeterminant, Flagman 12 – leafless determinant. Field experiments were established by the method of B.A. Dospekhov. We studied seeding rate from 0.6 to 1.4 million viable seeds per 1 ha with a difference between the options of 0.2 million.

The seeding rate of peas affected the number of beans per plant. Their number decreased in thickened crops and increased in crops with low seeding rates. On average, over three years, with a reduction in the rate of seeding from 1.4 to 0.6 million viable seeds per 1 ha, the number of beans per plant in the Samarius variety increased from 1.7 to 3.0, in Flagman 12 – from 1.8 to 2.8 pcs.

There was a tendency to reduce bean grain content and grain weight from a single plant with an increase in the seeding rate.

Crop structure indicators also depended on the conditions of the year. They were the best in 2017. In the course of research, it was found that the statistically significant difference in the grain yield of Samarius peas was obtained in 2015 and 2016, and in Flagman 12, in all years of research.

It has been established that an increase in seeding rate of peas to 1.2…1.4 million viable seeds per hectare reduces the number of beans per plant, seeds in a bean, and the mass of grain from one plant. The yield of grain per hectare does not significantly change depending on the seeding rate.

Key words: peas, varieties, yield structure, beans, seed weight, Samarius, Flagman 12.

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    Voskobulova Nadezhda Ivanovna, candidate of agricultural sciences FSBSI «Federal Research Center for Biological Systems and Agrotechnologies of the Russian Academy of Sciences», 460051, Russia,Orenburg, pr.Gagarina 27/1, tel.: 8(3532)71-00-23, 8-919-864-34-40, e-mail: voskobulova1952@yandex.ru

    Vereshchagina Antonina Sergeevna, candidate of agricultural sciences FSBSI «Federal Research Center for Biological Systems and Agrotechnologies of the Russian Academy of Sciences», 460051, Russia,Orenburg, pr.Gagarina 27/1, tel.: 8(3532)71-00-23, 8-919-853-17-26

    Uraskulov Ruslan Shamilyevich, FSBSI «Federal Research Center for Biological Systems and Agrotechnologies of the Russian Academy of Sciences», 460051, Russia,Orenburg, pr.Gagarina 27/1,tel.: 8(3532)71-00-23

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